Answer:
   x = 18
Step-by-step explanation:
The parts of the triangles are proportional, so you can write ...
   2x/80 = 27/60
Multiply by 120:
   3x = 54
Divide by 3:
   x = 18
 
        
             
        
        
        
0.25q + 0.1d = 4.95
d = 3q
0.25q + 0.1(3q) = 4.95
    0.25q + 0.3q = 4.95
               <u>0.55q</u> = <u>4.95</u>
                0.55     0.55
                      q = 9
0.25(9) + 0.1d = 4.95
    2.25 + 0.1d = 4.95
  <u>- 2.25             - 2.25</u>
               <u>0.1d</u> = <u>2.7</u>
                0.1     0.1
                    d = 27
        
             
        
        
        
Answer:
uh, the answer is either (-6, 1) or (-1,6) because the when plugging them both into the equation, they're both true.
 
        
             
        
        
        
The steps you need to do to evaluate the expression are (b) Drag zero pairs to the window. and (c) Remove the 5 groups of –2 tiles. 
<h3>How to determine the steps you need to do to evaluate the expression</h3>
The expression is given as:
-5(-2)
The above expression represents the product of -5 and -2
This can be interpreted as:
- Removal of 5 groups of -2; to remove means negative
- Dragging zero pairs of 5 and 2 to the interactive window
Hence, the steps you need to do to evaluate the expression are (b) Drag zero pairs to the window. and (c) Remove the 5 groups of –2 tiles. 
Read more about products at:
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They both are a type of measurement